From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/nios2/include/asm/mmu_context.h | 66 ++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 arch/nios2/include/asm/mmu_context.h (limited to 'arch/nios2/include/asm/mmu_context.h') diff --git a/arch/nios2/include/asm/mmu_context.h b/arch/nios2/include/asm/mmu_context.h new file mode 100644 index 000000000..294b4b1f8 --- /dev/null +++ b/arch/nios2/include/asm/mmu_context.h @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2010 Tobias Klauser + * Copyright (C) 1996, 1997, 1998, 1999 by Ralf Baechle + * Copyright (C) 1999 Silicon Graphics, Inc. + * + * based on MIPS asm/mmu_context.h + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef _ASM_NIOS2_MMU_CONTEXT_H +#define _ASM_NIOS2_MMU_CONTEXT_H + +#include + +extern void mmu_context_init(void); +extern unsigned long get_pid_from_context(mm_context_t *ctx); + +/* + * For the fast tlb miss handlers, we keep a pointer to the current pgd. + * processor. + */ +extern pgd_t *pgd_current; + +static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) +{ +} + +/* + * Initialize the context related info for a new mm_struct instance. + * + * Set all new contexts to 0, that way the generation will never match + * the currently running generation when this context is switched in. + */ +static inline int init_new_context(struct task_struct *tsk, + struct mm_struct *mm) +{ + mm->context = 0; + return 0; +} + +/* + * Destroy context related info for an mm_struct that is about + * to be put to rest. + */ +static inline void destroy_context(struct mm_struct *mm) +{ +} + +void switch_mm(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk); + +static inline void deactivate_mm(struct task_struct *tsk, + struct mm_struct *mm) +{ +} + +/* + * After we have set current->mm to a new value, this activates + * the context for the new mm so we see the new mappings. + */ +void activate_mm(struct mm_struct *prev, struct mm_struct *next); + +#endif /* _ASM_NIOS2_MMU_CONTEXT_H */ -- cgit v1.2.3-54-g00ecf